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纽马克(Newmark)早在六十年代就曾指出,用地震变形来控制土坝的地震稳定性比滑动安全系数更为合适。他提出了屈服加速度的概念,并基于刚塑性假定发展了计算地震变形的方法。土坝的震害表明,地震变形的机理应根
As early as the 1960’s, Newmark pointed out that it is more appropriate to control seismic stability of earth dam by earthquake deformation than sliding safety factor. He proposed the concept of yield acceleration and developed a method of calculating seismic deformation based on the assumption of rigid plasticity. Earth dam damage shows that the mechanism of earthquake deformation should be rooted